1Department of Parasitology, Hanyang University College of Medicine, Seoul 133-791, Korea.
2Korea Association of Health Promotion, Seoul 157-704, Korea.
3Department of Parasitology, Faculty of Medical Sciences, National University of Laos, Vientiane, Lao PDR.
4Malaria Center, Luangprabang, Lao PDR.
5Department of Hygiene and Prevention, Ministry of Health, Vientiane, Lao PDR. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/